Improved vulcanizing-fress



'tailliert (giant @wiwi .@llllf@ JOSEPH BANIGAN, OF SMITHFIELD ASSIGNOR TO WOONSOCKET RUBBER COMPANY, OF WOONSOOKET, RHODE ISLAND,

Letters Patent No. 97,266, dated November 30, 1869.

IMPROVED VULCANIZING-PRESS.

To all whom-tt 'may conce/rn Be it known that I, .Iosnrn BANIGAN, ot' Smithfield, in the county of B'rovidence, and in the State of Rhode Island, have invented a new and useful Iniproved Vulcanizing-Press,and mode of heating the same; and I do hereby declare that the. following is a full, clear, and exact description thereof, reference being had to the annexed drawings, making part of this speciiication, in which- Figure 1 represents a sectional elevation on line a: a* Vof iig. 2.

V Figure 2 tion.

The saine letters are used in both figures in the designation of identical part#l i A This invention relates to that class of presses which is used for pressing and vulcanizing rubber articles. v

Its object is to-providesimnle and effective. ineans for heating to the necessary degree those parts of such a press between which the` rubber is confined while being vulcanized. lo this end, I introduce under its hed a number of gas-jets, and use a hollow platen, also heated by a number of gas-jets. l

To enable those skilled in the art 'to make and use my invention, I will proceed to describe its con# struction and operation. Y A, in the drawings, represents the bed ofthe pressa rather tliin cast-iron plate, constructed with a continuous flange, A, around its sides and ends. Longitudinal ribs A may be yformed on its, under side, strengthening it, so as to be capable of withstanding any pressure which is likely to be exerted upon it. Lugs are formed on the corners of the flange A1, extending from top tobottorn thereof, perforated vertii cally, to receive 'thepillars O.

B represents a yoke, secured upon-the upper ends ofthe pillars G. It is constructed, in all respects, like the bed A, except that it is provided, centrally, with a hub, B', in which a screw-tl'n'ead is formed, adapted to a similar thread on the1 spindle E.

C Grepresent the pillars, above alluded to, firmly secured in 'the hed A, from which they rise vertically, to receive and support, upon their upper ends, the yoke B. 1

Between the bed and yoke, the platen orfollower Dis suspended, attached to and operated-upon by the spindle E, `a bridge, Dl, heilig secured upon it, centrally, for the purpose 'of receiving and retaining the lower end ot' such spindle.

I)2 is a plate, of hard metal, secured upon the platen directly under the foot of the spindle, against which it operates in pressing.

The-platen consists of an upper and lower plate, united'together by longitudinal flanges or'ribs d, it being open atits ends. It is to be of about the saine represents a central transverse vertical sec- The Schedule referred to in these Letters Patent andimakng part of the same,

size the bed, and itsl corners are also provided with lugs, perforated, to recieive the pillars C, upon which it is placed, sliding freely up and down on them as it is raised or depressed by the spindle.

E represents the spindle, the main portion of which is provided'with a screw-thread, adapted'to the thread inthe hub of the yoke B. Its lower end is secured under the bridge on the platen by acollar, ill the usual manner. Directlyabove the point where its screw.

thread terminates, a balance-wheel, E', is secured upon it, by which it may be revolved, for the purpese of raising or depressing the platen.

Another inca-us ibropcrating the spindle and platen is provided for by what may be ternied a ratchet-gear upon the uppci end ofthe spindle, consisting ofa fast collar, l", which is notched in,its upper surfaceand engaged by a key or pawl, f, in a loose collar, F', the arrangement oi' these parts benigsubstantially such as fully set forth in Let-ters Ilatent of the United States granted to nie August 31, 1869.

' G G represent pipes, placed under the bed of the press, which are closed at one end, and connected, by

their other ends, to a gas-pipe, from which they are supplied `with gas. They are provided with a. number of' burners, G', projectingupward, so as t direct the llames against the plate 'of lthe bed.

H H represent similar pipes, placed upon the platen, and also provided with a nurnherbf burners, H', projecti-n g, through perforations in the upper plate, downward, so as to direct the llames against the lower plate.

These pipes should be connected to the gas-pipe by a flexible tube, so as to allow them to rise and fall `with the platen. A v

- By means of these gas-jets, I ain enabled to heat the bed and platen, between which the rubber` is to be pressed and vulcanized, to any required degree.

That I claim as new, and desire to secure by Letters Patent, is-

l. The application of gas for heating the bed and platen of' a vulcanizingpress, substantially as set forth.

I '2. The combination, with the bed of' la vulcanizingpress of a number of gas-jets, substantially as and ,for the purpose set forth.

3. The combination, with the platen of a vulcanizing-press, of a number of gas-jets, substantially'as and for the purpose set forth. f

The above specification signed by me, this 11th day of October, 1869.

, JOSEPH BANIGFAN.

Witnesses:

-IELAND l). JnxcKEs,

L. W. MERRIAN. 

